Discontinuously operated desublimator having at least one flow disruptor

EP4583998A1Pending Publication Date: 2025-07-16BASF SE
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Patent Information

Application Number
EP2023762498
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-09-06
Filing Date
2023-08-30
Publication Date
2025-07-16

AI Technical Summary

Technical Problem

Existing discontinuously operated desublimators experience uneven gas mixture flow distribution and increased pressure loss due to temperature gradients and clogging issues, leading to premature regeneration and reduced loading capacity.

Method used

Incorporating a flow disruptor in the gas inlet distribution space to ensure even distribution of the gas mixture flow through the desublimation zone, with the geometric center of the flow disruptor positioned at a specific distance from the inlet surface to enhance uniformity and reduce excessive flow speeds.

Benefits of technology

This configuration results in more uniform desublimation across the flow channel walls, reducing pressure loss and allowing for longer regeneration intervals while increasing the loading capacity of the desublimator.

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Abstract

The invention relates to a discontinuously operated desublimator (1) for removing at least one gas component to be desublimated from a gas mixture flow, which desublimator comprises: a housing wall (7); an inlet (2) in the housing wall (7) for supplying the gas mixture flow into the desublimator (1); an outlet (6) in the housing wall (7) for discharging the treated gas mixture flow from the desublimator (1); a desublimation zone (4) with temperature-controllable flow channel walls, wherein the flow channel walls are temperature-controllable in such a way that during a loading process the at least one gas component to be desublimated is desublimated at the flow channel walls and that during a subsequent melting process the at least one gas component desublimated in the loading process melts at the flow channel walls; a gas entry distribution chamber (3), which is located between the inlet (2) and the desublimation zone (4); and a gas exit distribution chamber (5), which is located between the outlet (6) and the desublimation zone (4). According to the invention, a flow disruptor (8) is located in the gas entry distribution chamber (3) for uniformly distributing the gas mixture flow through the flow channels that result from the flow channel walls of the desublimation zone (4), the geometric centre of gravity of which flow disruption has a spacing (AT) from the geometric centre of gravity of the inlet surface (9) in the range of 0.2*D to 10.0*D, preferably in the range of 0.5*D to 3.0*D, wherein D corresponds to the equivalent diameter of a circle having the same area as the inlet surface (9) and the spacing (AT) is measured along the normal vector (nE) of the inlet surface (9). The invention also relates to a method for operating a desublimator (1) according to the invention.
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